A bridge safety monitoring method and system

Abstract

The present application relates to a bridge safety monitoring method and system, and relates to the technical field of bridge monitoring. The method includes the following steps: monitoring the bridge deck structure to obtain multiple bridge deck vibration information; monitoring the bridge pier structure to obtain multiple bridge pier vibration information; obtaining bridge deck vibration impact information based on each bridge deck vibration information and bridge deck vibration standard information; obtaining pier vibration impact information based on each pier vibration information and pier vibration standard information; calculating and obtaining bridge vibration assessment value based on bridge deck vibration impact information and pier vibration impact information; comparing the bridge vibration assessment value with the bridge vibration assessment standard value, and issuing bridge safety warning based on the comparison result. The present application monitors the bridge deck and bridge piers, and comprehensively considers the vibration situation, thereby conducting a rationality assessment of bridge safety, so as to remind bridge maintenance through early warning, thereby ensuring the safety of the bridge.

Description

Technical Field

[0001] The present application relates to the technical field of bridge monitoring, and in particular to a bridge safety monitoring method and system. Background Art

[0002] In the current social transportation, bridges bring convenience to the passage of vehicles and pedestrians, and the maintenance and management of bridges are the key to ensuring the safe operation of bridges. Traditional bridge safety monitoring requires maintenance personnel to perform regular maintenance. This working mode is inefficient and unreliable.

[0003] Therefore, in order to meet the current bridge monitoring needs, a new bridge safety monitoring technology is now provided. Summary of the invention

[0004] The present application provides a bridge safety monitoring method and system, which monitors the bridge deck and bridge piers, and comprehensively considers the vibration conditions to conduct a rational evaluation of the bridge safety, so as to remind bridge maintenance through early warning, thereby ensuring the safety of the bridge.

[0005] In a first aspect, the present application provides a bridge safety monitoring method, the method comprising the following steps:

[0006] Arrange a plurality of first vibration monitoring devices on the bridge deck structure of the target bridge, and arrange second vibration monitoring devices correspondingly on the plurality of pier structures of the target bridge;

[0007] In a preset bridge monitoring cycle, based on a first vibration monitoring frequency, controlling the first vibration monitoring device to monitor the bridge deck structure to obtain a plurality of bridge deck vibration information;

[0008] In a preset bridge monitoring cycle, based on a second vibration monitoring frequency, controlling the second vibration monitoring device to monitor the bridge pier structure to obtain vibration information of multiple bridge piers;

[0009] In a preset bridge monitoring period, based on each of the bridge deck vibration information and preset bridge deck vibration standard information, bridge deck vibration impact information is obtained;

[0010] Within a preset bridge monitoring period, based on the vibration information of each pier and preset pier vibration standard information, pier vibration impact information is obtained;

[0011] In a preset bridge monitoring period, based on the bridge deck vibration impact information and the bridge pier vibration impact information, combined with the corresponding bridge deck vibration impact weight and bridge pier vibration impact weight, a bridge vibration assessment value is calculated;

[0012] During the preset bridge monitoring period, the bridge vibration assessment value is compared with the preset bridge vibration assessment standard value, and a bridge safety warning is issued based on the comparison result.

[0013] Further, within a preset bridge monitoring period, based on each of the bridge deck vibration information and preset bridge deck vibration standard information, obtaining bridge deck vibration impact information includes the following steps:

[0014] Based on each of the bridge deck vibration information and the bridge deck vibration standard information, calculate and obtain a bridge deck vibration relative parameter corresponding to each of the bridge deck vibration information;

[0015] The bridge deck vibration relative parameters are summed to obtain the bridge deck vibration influence information.

[0016] Furthermore, the method further comprises the following steps:

[0017] Identify the bridge deck vibration information of other first vibration monitoring devices whose relative distances to the first vibration monitoring device are not greater than the first vibration influence distance, and count the number of the first vibration monitoring devices whose values ​​of the bridge deck vibration information are greater than a preset value of the mutually influencing bridge deck vibration information, and record it as the corresponding bridge deck vibration information influence factor;

[0018] Based on the bridge deck vibration information, the bridge deck vibration standard information and the corresponding bridge deck vibration information influencing factor, a bridge deck vibration relative parameter corresponding to the bridge deck vibration information is calculated and obtained.

[0019] Furthermore, the method also includes a bridge deck monitoring frequency adjustment process, and the bridge deck monitoring frequency adjustment process includes the following steps:

[0020] Taking one week as a statistical period and every 6 hours as a time period, the time period traffic flow of the target bridge in each time period within the statistical period is recorded;

[0021] Taking one week as a statistical period and every 6 hours as a time period, the traffic congestion duration of each time period of the target bridge within the statistical period is recorded;

[0022] Based on the traffic volume in the time period and the traffic jam duration in the time period, combined with the corresponding traffic volume threshold in the time period and the traffic jam duration threshold in the time period, a corresponding first time period monitoring frequency adjustment coefficient is obtained;

[0023] Based on a preset standard vibration monitoring frequency and the first time period monitoring frequency adjustment coefficient, calculate and obtain the first vibration monitoring frequency corresponding to the time period;

[0024] The method further comprises the following steps:

[0025] In a preset bridge monitoring cycle, based on the first vibration monitoring frequency of each corresponding time period, controlling the first vibration monitoring device to monitor the bridge deck structure;

[0026] Each of the first vibration monitoring devices integrates the bridge deck vibration information corresponding to each of the first vibration monitoring devices based on the multiple bridge deck vibration monitoring information obtained through monitoring by each of the first vibration monitoring devices.

[0027] Furthermore, the first vibration monitoring device is used to monitor and obtain the bridge deck vibration amplitude or bridge deck vibration frequency;

[0028] If the first vibration monitoring device is used to simultaneously monitor and obtain the bridge deck vibration amplitude and the bridge deck vibration frequency, the method includes the following steps:

[0029] Numerically normalizing the bridge deck vibration amplitude and the bridge deck vibration frequency to obtain a bridge deck vibration amplitude parameter and a bridge deck vibration frequency parameter;

[0030] Based on the bridge deck vibration amplitude parameter and the bridge deck vibration frequency parameter, combined with the corresponding bridge deck vibration amplitude influence weight and bridge deck vibration frequency influence weight, the bridge deck vibration information is obtained;

[0031] If the first vibration monitoring device is used to monitor and obtain the vibration amplitude of the bridge deck, the method comprises the following steps:

[0032] Numerically normalizing the bridge deck vibration amplitude to obtain a bridge deck vibration amplitude parameter;

[0033] Based on the bridge deck vibration amplitude parameter, obtaining the bridge deck vibration information;

[0034] If the first vibration monitoring device is used to monitor and obtain the vibration frequency of the bridge deck, the method includes the following steps:

[0035] Numerical standardization is performed on the bridge deck vibration frequency to obtain a bridge deck vibration frequency parameter;

[0036] Based on the bridge deck vibration frequency parameter, the bridge deck vibration information is obtained.

[0037] Furthermore, within a preset bridge monitoring period, based on the vibration information of each pier and preset pier vibration standard information, the pier vibration influence information is obtained, including the following steps:

[0038] Based on the vibration information of each pier and the standard information of the pier vibration, a relative pier vibration parameter corresponding to the vibration information of each pier is calculated;

[0039] The relative vibration parameters of each bridge pier are summed to obtain the vibration influence information of the bridge pier.

[0040] Furthermore, the method further comprises the following steps:

[0041] Identify the pier vibration information of other second vibration monitoring devices whose relative distances to the second vibration monitoring device are not greater than the second vibration influence distance, count the number of the second vibration monitoring devices whose values ​​of the pier vibration information are greater than a preset value of the mutually influencing pier vibration information, and record it as the corresponding pier vibration information influence factor;

[0042] Based on the bridge pier vibration information, the bridge pier vibration standard information and the corresponding bridge pier vibration information influencing factor, a bridge pier vibration relative parameter corresponding to the bridge pier vibration information is calculated and obtained.

[0043] Furthermore, the method also includes a pier monitoring frequency adjustment process, and the pier monitoring frequency adjustment process includes the following steps:

[0044] Taking one week as a statistical cycle and every 6 hours as a time period, record the time value of the bridge pier water flow impact pressure value greater than the water flow impact pressure threshold value in each time period within the statistical cycle of the target bridge, and record it as the impact pressure effective time value;

[0045] Based on the impact pressure effective time value and the corresponding impact pressure effective time value threshold, a corresponding second time period monitoring frequency adjustment coefficient is obtained;

[0046] Based on a preset standard vibration monitoring frequency and a monitoring frequency adjustment coefficient for the second time period, calculating and obtaining the second vibration monitoring frequency corresponding to the time period;

[0047] The method further comprises the following steps:

[0048] In a preset bridge monitoring cycle, based on the second vibration monitoring frequency of each corresponding time period, controlling the second vibration monitoring device to monitor the bridge pier structure;

[0049] Each of the second vibration monitoring devices integrates the bridge pier vibration information corresponding to each of the second vibration monitoring devices based on the multiple bridge pier vibration monitoring information obtained through monitoring by each of the second vibration monitoring devices.

[0050] Furthermore, if the target bridge is a cable-stayed bridge structure, the method further comprises the following steps:

[0051] Arrange a plurality of third vibration monitoring devices on each of the cable-stayed structures of the target bridge;

[0052] In a preset bridge monitoring cycle, based on a third vibration monitoring frequency, controlling the third vibration monitoring device to monitor the cable-stayed structure to obtain vibration information of a plurality of cables;

[0053] In a preset bridge monitoring period, based on the vibration information of each of the stay cables and preset standard information of the stay cable vibration, the stay cable vibration influence information is obtained;

[0054] During a preset bridge monitoring period, based on the bridge deck vibration impact information, the bridge pier vibration impact information and the cable-stayed cable vibration impact information, combined with corresponding bridge deck vibration impact weights, bridge pier vibration impact weights and cable-stayed cable vibration impact information, a bridge vibration assessment value is calculated.

[0055] In a second aspect, the present application provides a bridge safety monitoring system, the system comprising:

[0056] A plurality of first vibration monitoring devices arranged on the bridge deck structure of the target bridge, which are used to control the first vibration monitoring devices to monitor the bridge deck structure based on a first vibration monitoring frequency within a preset bridge monitoring period to obtain a plurality of bridge deck vibration information;

[0057] A plurality of second vibration monitoring devices arranged on the pier structure of the target bridge, which are used to monitor the pier structure based on a second vibration monitoring frequency within a preset bridge monitoring period to obtain a plurality of pier vibration information;

[0058] A bridge deck vibration information integration module, which is used to obtain bridge deck vibration impact information based on each of the bridge deck vibration information and preset bridge deck vibration standard information within a preset bridge monitoring period;

[0059] A pier vibration information integration module, which is used to obtain pier vibration impact information based on the pier vibration information and preset pier vibration standard information within a preset bridge monitoring period;

[0060] A bridge vibration assessment module, which is used to calculate and obtain a bridge vibration assessment value within a preset bridge monitoring period based on the bridge deck vibration impact information and the bridge pier vibration impact information, combined with corresponding bridge deck vibration impact weights and bridge pier vibration impact weights;

[0061] The bridge safety warning module is used to compare the bridge vibration assessment value with the preset bridge vibration assessment standard value within a preset bridge monitoring period, and to issue a bridge safety warning based on the comparison result.

[0062] The beneficial effects of the technical solution provided by this application include:

[0063] In the embodiment of the present application, the bridge deck and the bridge piers are monitored, and a comprehensive consideration is made based on the vibration conditions to perform a rational assessment of the bridge safety so that early warnings can be used to remind bridge maintenance, thereby ensuring the safety of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0065] Figure 1 A flow chart of the steps of the bridge safety monitoring method provided in an embodiment of the present application;

[0066] Figure 2 This is a structural block diagram of the bridge safety monitoring system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0068] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0069] The embodiments of the present application provide a bridge safety monitoring method and system, which monitor the bridge deck and bridge piers, and make a comprehensive consideration based on the vibration conditions, so as to make a rational assessment of the bridge safety, so as to remind bridge maintenance through early warning, thereby ensuring the safety of the bridge.

[0070] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0071] First, see Figure 1 As shown, the embodiment of the present application provides a bridge safety monitoring method, which includes the following steps:

[0072] S1. Arrange a plurality of first vibration monitoring devices on the bridge deck structure of the target bridge, and arrange corresponding second vibration monitoring devices on a plurality of pier structures of the target bridge;

[0073] S2. within a preset bridge monitoring period, based on a first vibration monitoring frequency, controlling a first vibration monitoring device to monitor the bridge deck structure to obtain a plurality of bridge deck vibration information;

[0074] S3. within a preset bridge monitoring period, based on a second vibration monitoring frequency, controlling a second vibration monitoring device to monitor the pier structure to obtain vibration information of a plurality of piers;

[0075] S4. within a preset bridge monitoring period, based on the vibration information of each bridge deck and preset bridge deck vibration standard information, obtaining bridge deck vibration impact information;

[0076] S5. within a preset bridge monitoring period, based on the vibration information of each pier and preset pier vibration standard information, obtaining pier vibration impact information;

[0077] S6. Within a preset bridge monitoring period, based on the bridge deck vibration impact information and the bridge pier vibration impact information, combined with the corresponding bridge deck vibration impact weight and the bridge pier vibration impact weight, calculate and obtain the bridge vibration assessment value;

[0078] S7. During a preset bridge monitoring period, the bridge vibration assessment value is compared with a preset bridge vibration assessment standard value, and a bridge safety warning is issued based on the comparison result.

[0079] It should be noted that the operation of the first vibration monitoring device and the second vibration monitoring device is described below, taking the first vibration monitoring device as an example:

[0080] Because within a preset bridge monitoring period, based on the first vibration monitoring frequency, the first vibration monitoring device is controlled to monitor the bridge deck structure to obtain a plurality of bridge deck vibration information, specifically, each first vibration monitoring device can obtain a corresponding piece of bridge deck vibration information;

[0081] Since the first vibration monitoring device performs monitoring based on the first vibration monitoring frequency within the preset bridge monitoring period, it actually obtains multiple monitoring data within the bridge monitoring period, which are recorded as real-time bridge deck vibration information, and performs median processing or average processing based on the multiple real-time bridge deck vibration information, so that the corresponding average value or median is used as the bridge deck vibration information corresponding to the first vibration monitoring device;

[0082] Similarly, the second vibration monitoring device is also the same, which will not be described in detail here.

[0083] It should be noted that, in steps S6-S7, within a preset bridge monitoring period, based on the bridge deck vibration impact information and the bridge pier vibration impact information, combined with the corresponding bridge deck vibration impact weight and bridge pier vibration impact weight, the bridge vibration assessment value is calculated and obtained, as follows: ;in,

[0084] is the bridge deck vibration impact information, is the vibration impact information of the bridge pier, is the bridge deck vibration impact weight, is the vibration impact weight of the bridge pier, is the bridge vibration assessment value, and The standard value for bridge vibration assessment.

[0085] If the bridge vibration assessment value is greater than the bridge vibration assessment standard value, it is determined that an early warning is needed and a bridge safety warning is issued. Otherwise, it is considered temporarily safe and no bridge safety warning is issued.

[0086] In the embodiment of the present application, the bridge deck and the bridge piers are monitored, and a comprehensive consideration is made based on the vibration conditions to perform a rational assessment of the bridge safety so that early warnings can be used to remind bridge maintenance, thereby ensuring the safety of the bridge.

[0087] Further, within a preset bridge monitoring period, based on each of the bridge deck vibration information and preset bridge deck vibration standard information, obtaining bridge deck vibration impact information includes the following steps:

[0088] Based on each of the bridge deck vibration information and the bridge deck vibration standard information, calculate and obtain a bridge deck vibration relative parameter corresponding to each of the bridge deck vibration information;

[0089] The bridge deck vibration relative parameters are summed to obtain the bridge deck vibration influence information.

[0090] It should be noted that, assuming that the bridge deck vibration information obtained by each first vibration monitoring device is recorded as , then they can be , , , , , and the corresponding bridge deck vibration standard information is ;

[0091] Then, based on each of the bridge deck vibration information and the bridge deck vibration standard information, a bridge deck vibration relative parameter corresponding to each of the bridge deck vibration information is calculated, which may specifically be the following operation: ;in,

[0092] is the relative parameter of bridge deck vibration, and the relative parameters of bridge deck vibration corresponding to each of the bridge deck vibration information can be , , , , ;

[0093] The bridge deck vibration standard information is a numerical value obtained through testing, experimentation or simulation, which corresponds to the maximum allowable value of a normal range of parameters when vibration occurs during normal operation of the bridge deck.

[0094] Then, the relative parameters of the bridge deck vibration are summed to obtain the bridge deck vibration influence information. The specific formula is: ,in,

[0095] is the bridge deck vibration impact information, is the number of the first vibration monitoring devices, is the relative parameter of the bridge deck vibration corresponding to the i-th first vibration monitoring device.

[0096] Furthermore, the method further comprises the following steps:

[0097] Identify the bridge deck vibration information of other first vibration monitoring devices whose relative distances to the first vibration monitoring device are not greater than the first vibration influence distance, and count the number of the first vibration monitoring devices whose values ​​of the bridge deck vibration information are greater than a preset value of the mutually influencing bridge deck vibration information, and record it as the corresponding bridge deck vibration information influence factor;

[0098] Based on the bridge deck vibration information, the bridge deck vibration standard information and the corresponding bridge deck vibration information influencing factor, a bridge deck vibration relative parameter corresponding to the bridge deck vibration information is calculated and obtained.

[0099] Based on the above formula, the mutually affecting bridge deck vibration information is recorded as , assuming that a first vibration monitoring device has other first vibration monitoring devices around it whose relative distance is not greater than the first vibration influence distance, there are The value of the bridge deck vibration information of the first vibration monitoring device is greater than the bridge deck vibration information that affects each other, that is, greater than , take its value, then the bridge deck vibration information influencing factor is ;

[0100] At this time, the relative parameters of the bridge deck vibration of the first vibration monitoring device are corrected and calculated, and the calculation formula is: ,in,

[0101] is the influencing factor of bridge deck vibration information, is the number of the first vibration monitoring devices.

[0102] Furthermore, the method also includes a bridge deck monitoring frequency adjustment process, and the bridge deck monitoring frequency adjustment process includes the following steps:

[0103] Taking one week as a statistical period and every 6 hours as a time period, the time period traffic flow of the target bridge in each time period within the statistical period is recorded;

[0104] Taking one week as a statistical period and every 6 hours as a time period, the traffic congestion duration of each time period of the target bridge within the statistical period is recorded;

[0105] Based on the traffic volume in the time period and the traffic jam duration in the time period, combined with the corresponding traffic volume threshold in the time period and the traffic jam duration threshold in the time period, a corresponding first time period monitoring frequency adjustment coefficient is obtained;

[0106] Based on a preset standard vibration monitoring frequency and the first time period monitoring frequency adjustment coefficient, calculate and obtain the first vibration monitoring frequency corresponding to the time period;

[0107] The method further comprises the following steps:

[0108] In a preset bridge monitoring cycle, based on the first vibration monitoring frequency of each corresponding time period, controlling the first vibration monitoring device to monitor the bridge deck structure;

[0109] Each of the first vibration monitoring devices integrates the bridge deck vibration information corresponding to each of the first vibration monitoring devices based on the multiple bridge deck vibration monitoring information obtained through monitoring by each of the first vibration monitoring devices.

[0110] It should be noted that the traffic flow in the time period is recorded as v, the traffic jam duration in the time period is recorded as t, the corresponding time period traffic flow threshold is recorded as v0, the time period traffic jam duration threshold is recorded as t0, and the first time period monitoring frequency adjustment coefficient is recorded as q X ;

[0111] Based on experiments or tests, we can understand the influence of traffic flow and traffic jam duration on bridge deck vibration, and then set the monitoring frequency influence weight according to their respective influence degrees, which are the traffic flow monitoring frequency influence weight and the traffic jam duration monitoring frequency influence weight, respectively denoted as W v and W t , then the calculation formula for the monitoring frequency in the first time period is: ;in,

[0112] The monitoring frequency adjustment coefficient for the first time period is: ;

[0113] q0 sets the standard vibration monitoring frequency.

[0114] Furthermore, the first vibration monitoring device is used to monitor and obtain the bridge deck vibration amplitude or bridge deck vibration frequency;

[0115] If the first vibration monitoring device is used to simultaneously monitor and obtain the bridge deck vibration amplitude and the bridge deck vibration frequency, the method includes the following steps:

[0116] Numerically normalizing the bridge deck vibration amplitude and the bridge deck vibration frequency to obtain a bridge deck vibration amplitude parameter and a bridge deck vibration frequency parameter;

[0117] Based on the bridge deck vibration amplitude parameter and the bridge deck vibration frequency parameter, combined with the corresponding bridge deck vibration amplitude influence weight and bridge deck vibration frequency influence weight, the bridge deck vibration information is obtained;

[0118] If the first vibration monitoring device is used to monitor and obtain the vibration amplitude of the bridge deck, the method comprises the following steps:

[0119] Numerically normalizing the bridge deck vibration amplitude to obtain a bridge deck vibration amplitude parameter;

[0120] Based on the bridge deck vibration amplitude parameter, obtaining the bridge deck vibration information;

[0121] If the first vibration monitoring device is used to monitor and obtain the vibration frequency of the bridge deck, the method includes the following steps:

[0122] Numerical standardization is performed on the bridge deck vibration frequency to obtain a bridge deck vibration frequency parameter;

[0123] Based on the bridge deck vibration frequency parameter, the bridge deck vibration information is obtained.

[0124] It should be noted that, in order to better illustrate the above operation, by way of example, taking the first vibration monitoring device numbered 1 as an example, the bridge deck vibration information obtained by the first vibration monitoring device is: , there are three situations:

[0125] First, the first vibration monitoring device is only used to monitor and obtain the vibration amplitude of the bridge deck. The bridge deck vibration amplitude parameters obtained based on the detection are as follows:

[0126] The calculation formula of the bridge deck vibration information is: ;in,

[0127] is the bridge deck vibration amplitude parameter, It is the standardized value of the bridge deck vibration amplitude parameter used for data unification.

[0128] Second, the first vibration monitoring device is only used to monitor and obtain the bridge deck vibration frequency, and then the bridge deck vibration frequency parameters obtained based on the detection are obtained, and the specific situation is as follows:

[0129] The calculation formula of the bridge deck vibration information is: ;in,

[0130] is the bridge deck vibration frequency parameter, The standardized values ​​of the bridge deck vibration frequency parameters are used for data unification.

[0131] Third, the first vibration monitoring device is used to monitor and obtain the bridge deck vibration amplitude and bridge deck vibration frequency. It is obtained based on comprehensive consideration of the bridge deck vibration amplitude and bridge deck vibration frequency obtained by detection;

[0132] The calculation formula of the bridge deck vibration information is: ;in,

[0133] is the bridge deck vibration frequency parameter, The standardized values ​​of bridge deck vibration frequency parameters used for data unification are: is the bridge deck vibration amplitude parameter, The standardized values ​​of the bridge deck vibration amplitude parameters used for data unification are: and are the weights of the pre-set influencing values, They are the influence weight of bridge deck vibration frequency and the influence weight of bridge deck vibration amplitude respectively.

[0134] Furthermore, within a preset bridge monitoring period, based on the vibration information of each pier and preset pier vibration standard information, the pier vibration influence information is obtained, including the following steps:

[0135] Based on the vibration information of each pier and the standard information of the pier vibration, a relative pier vibration parameter corresponding to the vibration information of each pier is calculated;

[0136] The relative vibration parameters of each bridge pier are summed to obtain the vibration influence information of the bridge pier.

[0137] It should be noted that, assuming that the bridge pier vibration information obtained by each second vibration monitoring device is recorded as , then they can be , , , , , and the corresponding bridge pier vibration standard information is ;

[0138] Then, based on the vibration information of each pier and the standard information of the pier vibration, the relative parameters of the pier vibration corresponding to the vibration information of each pier are calculated, which may be specifically performed as follows: ;in,

[0139] is the relative parameter of pier vibration, and the relative parameters of pier vibration corresponding to each of the pier vibration information can be , , , , ;

[0140] The bridge pier vibration standard information is a numerical value obtained through testing, experimentation or simulation, which corresponds to the maximum allowable value of a normal range of parameters when vibration occurs during normal operation of the bridge pier.

[0141] Then, the relative vibration parameters of the bridge piers are summed to obtain the vibration influence information of the bridge piers. The specific formula is: ,in,

[0142] is the vibration impact information of the bridge pier, is the number of the second vibration monitoring devices, is the relative parameter of the bridge deck vibration corresponding to the i-th second vibration monitoring device.

[0143] Furthermore, the method further comprises the following steps:

[0144] Identify the pier vibration information of other second vibration monitoring devices whose relative distances to the second vibration monitoring device are not greater than the second vibration influence distance, count the number of the second vibration monitoring devices whose values ​​of the pier vibration information are greater than a preset value of the mutually influencing pier vibration information, and record it as the corresponding pier vibration information influence factor;

[0145] Based on the bridge pier vibration information, the bridge pier vibration standard information and the corresponding bridge pier vibration information influencing factor, a bridge pier vibration relative parameter corresponding to the bridge pier vibration information is calculated and obtained.

[0146] Based on the above formula, the vibration information of the mutually affecting bridge piers is recorded as , assuming that a second vibration monitoring device has a relative distance no greater than the second vibration influence distance of the other second vibration monitoring devices around it, there are The value of the bridge pier vibration information of the first vibration monitoring device is greater than the mutually affecting bridge pier vibration information, that is, greater than , then the influencing factor of the pier vibration information is ;

[0147] At this time, the relative parameters of the pier vibration of the second vibration monitoring device are corrected and calculated, and the calculation formula is: ,in,

[0148] is the influencing factor of pier vibration information, is the number of the second vibration monitoring devices.

[0149] Furthermore, the method also includes a pier monitoring frequency adjustment process, and the pier monitoring frequency adjustment process includes the following steps:

[0150] Taking one week as a statistical cycle and every 6 hours as a time period, record the time value of the bridge pier water flow impact pressure value greater than the water flow impact pressure threshold value in each time period within the statistical cycle of the target bridge, and record it as the impact pressure effective time value;

[0151] Based on the impact pressure effective time value and the corresponding impact pressure effective time value threshold, a corresponding second time period monitoring frequency adjustment coefficient is obtained;

[0152] Based on a preset standard vibration monitoring frequency and a monitoring frequency adjustment coefficient for the second time period, calculating and obtaining the second vibration monitoring frequency corresponding to the time period;

[0153] The method further comprises the following steps:

[0154] In a preset bridge monitoring cycle, based on the second vibration monitoring frequency of each corresponding time period, controlling the second vibration monitoring device to monitor the bridge pier structure;

[0155] Each of the second vibration monitoring devices integrates the bridge pier vibration information corresponding to each of the second vibration monitoring devices based on the multiple bridge pier vibration monitoring information obtained through monitoring by each of the second vibration monitoring devices.

[0156] It should be noted that the water flow impact pressure value of the bridge pier is recorded as P, the corresponding water flow impact pressure threshold is recorded as P0, and the impact pressure effective time value is recorded as t P , the effective time value threshold of the impact pressure is recorded as t P0 ,

[0157] Based on experiments or tests, we can understand the impact of impact pressure on bridge pier vibration, and then set the monitoring frequency impact weight according to the impact degree, which is the impact pressure monitoring frequency impact weight, denoted as W p , then, then, the calculation formula for the monitoring frequency in the second time period is:

[0158] ;in,

[0159] The monitoring frequency adjustment coefficient for the second time period is: ;

[0160] q0 is the set standard vibration monitoring frequency.

[0161] Furthermore, the second vibration monitoring device is used to monitor and obtain the vibration amplitude or vibration frequency of the bridge pier;

[0162] If the second vibration monitoring device is used to simultaneously monitor and obtain the vibration amplitude of the bridge pier and the vibration frequency of the bridge pier, the method includes the following steps:

[0163] Numerical standardization is performed on the vibration amplitude of the bridge pier and the vibration frequency of the bridge pier to obtain a vibration amplitude parameter of the bridge pier and a vibration frequency parameter of the bridge pier;

[0164] Based on the bridge pier vibration amplitude parameter and the bridge pier vibration frequency parameter, combined with the corresponding bridge pier vibration amplitude influence weight and bridge pier vibration frequency influence weight, the bridge pier vibration information is obtained;

[0165] If the second vibration monitoring device is used to monitor and obtain the vibration amplitude of the bridge pier, the method includes the following steps:

[0166] Numerical standardization is performed on the vibration amplitude of the bridge pier to obtain a bridge pier vibration amplitude parameter;

[0167] Based on the vibration amplitude parameter of the bridge pier, obtaining the vibration information of the bridge pier;

[0168] If the second vibration monitoring device is used to monitor and obtain the vibration frequency of the bridge pier, the method includes the following steps:

[0169] Numerical standardization is performed on the vibration frequency of the bridge pier to obtain a vibration frequency parameter of the bridge pier;

[0170] Based on the bridge pier vibration frequency parameter, the bridge pier vibration information is obtained.

[0171] It should be noted that, in order to better illustrate the above operation, by way of example, taking the second vibration monitoring device labeled 1 as an example, the bridge deck vibration information obtained by the second vibration monitoring device is, then there are three situations:

[0172] First, the second vibration monitoring device is only used to monitor and obtain the vibration amplitude of the bridge pier, and then the vibration amplitude parameter of the bridge pier obtained by detection is obtained, and the specific situation is as follows:

[0173] The calculation formula of the bridge pier vibration information is: ;in,

[0174] is the vibration amplitude parameter of the pier, The standardized values ​​of the pier vibration amplitude parameters are used for data unification.

[0175] Second, the second vibration monitoring device is only used to monitor and obtain the vibration frequency of the bridge pier. The vibration frequency parameters of the bridge pier obtained based on the detection are as follows:

[0176] The calculation formula of the bridge pier vibration information is: ;in,

[0177] is the vibration frequency parameter of the pier, The standardized values ​​of the pier vibration frequency parameters are used for data unification.

[0178] Third, the second vibration monitoring device is used to monitor and obtain the vibration amplitude and vibration frequency of the bridge pier. It is obtained based on the comprehensive consideration of the vibration amplitude and vibration frequency of the piers obtained by detection;

[0179] The calculation formula of the bridge pier vibration information is: ;in,

[0180] is the vibration frequency parameter of the pier, The standardized values ​​of the vibration frequency parameters of the bridge piers used for data unification are: is the vibration amplitude parameter of the pier, The standardized values ​​of the vibration amplitude parameters of the bridge piers are used for data unification. as well as are the weights of the pre-set influencing values, namely the influencing weight of the pier vibration frequency and the influencing weight of the pier vibration amplitude.

[0181] Furthermore, if the target bridge is a cable-stayed bridge structure, the method further comprises the following steps:

[0182] A1. Arrange multiple third vibration monitoring devices on each cable-stayed structure of the target bridge;

[0183] A2. within a preset bridge monitoring period, based on a third vibration monitoring frequency, controlling the third vibration monitoring device to monitor the cable-stayed structure to obtain vibration information of a plurality of cables;

[0184] A3. within a preset bridge monitoring period, based on the vibration information of each of the stay cables and preset standard information of the stay cable vibration, obtaining the vibration influence information of the stay cables;

[0185] S6. Within a preset bridge monitoring period, based on the bridge deck vibration impact information, the bridge pier vibration impact information and the cable-stayed cable vibration impact information, combined with corresponding bridge deck vibration impact weights, bridge pier vibration impact weights and cable-stayed cable vibration impact information, a bridge vibration assessment value is calculated.

[0186] Specifically, the calculation formula is: ;

[0187] in, is the bridge deck vibration impact information, is the vibration impact information of the bridge pier, is the vibration impact information of the inclined cable, is the bridge deck vibration impact weight, is the vibration impact weight of the bridge pier, is the vibration influence weight of the cable, is the bridge vibration assessment value, And is the standard value for bridge vibration assessment.

[0188] In the embodiment of the present application, the bridge deck, bridge piers and cable-stayed cables are monitored and comprehensively considered based on the vibration conditions, thereby making a rational assessment of the safety of the bridge so that early warnings can be used to remind bridge maintenance, thereby ensuring the safety of the bridge.

[0189] Furthermore, within a preset bridge monitoring period, based on the vibration information of each of the stay cables and preset standard information of the stay cable vibration, the stay cable vibration influence information is obtained, including the following steps:

[0190] Based on the vibration information of each of the inclined cables and the vibration standard information of the inclined cables, a relative vibration parameter of the inclined cables corresponding to the vibration information of each of the inclined cables is calculated;

[0191] The relative vibration parameters of the inclined cables are summed to obtain the vibration influence information of the inclined cables.

[0192] It should be noted that, assuming that the vibration information of the cable obtained by each third vibration monitoring device is recorded as , then they can be , , , , ,

[0193] The corresponding standard information of the cable vibration is: ;

[0194] Then, based on the vibration information of each of the inclined cables and the vibration standard information of the inclined cables, the relative vibration parameters of the inclined cables corresponding to the vibration information of each of the inclined cables are calculated, which may be specifically performed as follows: ;in,

[0195] is the relative vibration parameter of the inclined cable, and the relative vibration parameters of the inclined cable corresponding to each of the inclined cable vibration information can be , , , , ;

[0196] The vibration standard information of the inclined cable is a value obtained according to a test, experiment or simulation, and the value corresponds to the maximum allowable value of the normal range of parameters when the inclined cable vibrates during normal operation.

[0197] Then, the relative vibration parameters of the inclined cables are summed to obtain the vibration influence information of the inclined cables. The specific formula is: ,in,

[0198] is the vibration impact information of the inclined cable, is the number of the third vibration monitoring devices, is the relative vibration parameter of the inclined cable corresponding to the i-th third vibration monitoring device.

[0199] Furthermore, the method further comprises the following steps:

[0200] Identify the cable vibration information of other third vibration monitoring devices whose relative distance to the third vibration monitoring device is not greater than the third vibration influence distance, count the number of the third vibration monitoring devices whose values ​​of the cable vibration information are greater than the preset values ​​of the mutually influencing cable vibration information, and record them as corresponding cable vibration information influence factors;

[0201] Based on the cable vibration information, the cable vibration standard information and the corresponding cable vibration information influencing factor, a cable vibration relative parameter corresponding to the cable vibration information is calculated and obtained.

[0202] Based on the above formula, the vibration information of the mutually affecting cable is recorded as , assuming that a third vibration monitoring device, among the other third vibration monitoring devices around it, the relative distance is not greater than the third vibration influence distance, there are The value of the vibration information of the inclined cable of the third vibration monitoring device is greater than the vibration information of the mutually affecting inclined cable, that is, greater than , take its value, then the influence factor of the cable vibration information is ;

[0203] At this time, the relative vibration parameters of the inclined cable of the third vibration monitoring device are corrected and calculated, and the calculation formula is: ,in,

[0204] is the influence factor of the cable vibration information, is the number of the third vibration monitoring devices.

[0205] Furthermore, the method also includes a stay cable monitoring frequency adjustment process, and the stay cable monitoring frequency adjustment process includes the following steps:

[0206] Recording the real-time wind speed at the height of the cable-stayed structure of the target bridge;

[0207] Based on the real-time wind speed and the preset wind speed standard value, obtaining a monitoring frequency adjustment coefficient for a third time period;

[0208] Based on the preset standard vibration monitoring frequency and the first time period monitoring frequency adjustment coefficient, the corresponding third vibration monitoring frequency is calculated;

[0209] The method further comprises the following steps:

[0210] In a preset bridge monitoring cycle, based on the corresponding third vibration monitoring frequency, controlling the third vibration monitoring device to monitor the cable-stayed structure;

[0211] Each of the third vibration monitoring devices integrates the vibration information of the inclined cables corresponding to each of the third vibration monitoring devices based on the vibration monitoring information of the plurality of inclined cables obtained through monitoring by each of the third vibration monitoring devices.

[0212] Since the cable-stayed cables are relatively long, the height of the cable-stayed structure of the target bridge may be the height value of the midpoint of the cable-stayed structure.

[0213] It should be noted that the real-time wind speed is recorded as v 风 , the corresponding wind speed standard value is recorded as v 风0 , the monitoring frequency of the third time period is recorded as q Z ;

[0214] Based on experiments or tests, we can understand the influence of real-time wind speed on the cable, and then set the monitoring frequency influence weight according to the influence degree, which is the real-time wind speed monitoring frequency influence weight, denoted as W v风 , then the calculation formula for the monitoring frequency of the third time period is:

[0215] ;in,

[0216] The monitoring frequency adjustment coefficient for the third time period is: ;

[0217] q0 sets the standard vibration monitoring frequency.

[0218] Furthermore, the third vibration monitoring device is used to monitor and obtain the vibration amplitude or vibration frequency of the inclined cable;

[0219] If the third vibration monitoring device is used to simultaneously monitor and obtain the vibration amplitude of the inclined cable and the vibration frequency of the inclined cable, the method includes the following steps:

[0220] Numerical standardization is performed on the vibration amplitude of the inclined cable and the vibration frequency of the inclined cable to obtain a vibration amplitude parameter of the inclined cable and a vibration frequency parameter of the inclined cable;

[0221] Based on the vibration amplitude parameter of the inclined cable and the vibration frequency parameter of the inclined cable, in combination with the corresponding influence weight of the vibration amplitude of the inclined cable and the influence weight of the vibration frequency of the inclined cable, the vibration information of the inclined cable is obtained;

[0222] If the third vibration monitoring device is used to monitor and obtain the vibration amplitude of the inclined cable, the method comprises the following steps:

[0223] Numerical standardization is performed on the vibration amplitude of the inclined cable to obtain a vibration amplitude parameter of the inclined cable;

[0224] Based on the vibration amplitude parameter of the inclined cable, obtaining the vibration information of the inclined cable;

[0225] If the third vibration monitoring device is used to monitor and obtain the vibration frequency of the stay cable, the method comprises the following steps:

[0226] Numerical standardization is performed on the vibration frequency of the inclined cable to obtain a vibration frequency parameter of the inclined cable;

[0227] Based on the vibration frequency parameter of the inclined cable, the vibration information of the inclined cable is obtained.

[0228] It should be noted that, in order to better illustrate the above operation, by way of example, taking the third vibration monitoring device labeled 1 as an example, the vibration information of the inclined cable obtained is: , there are three situations:

[0229] First, the third vibration monitoring device is only used to monitor the vibration amplitude of the cable. The vibration amplitude parameters of the inclined cable obtained based on the detection are as follows:

[0230] The calculation formula of the vibration information of the inclined cable is: ;in,

[0231] is the vibration amplitude parameter of the cable, It is the standardized value of the vibration amplitude parameter of the inclined cable used for data unification.

[0232] Second, the third vibration monitoring device is only used to monitor the vibration frequency of the cable. The vibration frequency parameters of the inclined cable obtained based on the detection are as follows:

[0233] The calculation formula of the vibration information of the inclined cable is: ;in,

[0234] is the vibration frequency parameter of the inclined cable, and is the standardized value of the vibration frequency parameter of the inclined cable used for data unification setting.

[0235] Third, the third vibration monitoring device is used to monitor and obtain the vibration amplitude and vibration frequency of the inclined cable. It is obtained by comprehensive consideration of the vibration amplitude and vibration frequency of the inclined cable obtained by detection;

[0236] The calculation formula of the vibration information of the inclined cable is:

[0237] ;in,

[0238] is the vibration frequency parameter of the cable, The standardized values ​​of the vibration frequency parameters of the inclined cables used for data unification are: is the vibration amplitude parameter of the cable, The standardized value of the vibration amplitude parameter of the inclined cable used for data unification setting is as well as are the weights of the pre-set influencing values, namely the influencing weight of the vibration frequency of the inclined cable and the influencing weight of the vibration amplitude of the inclined cable.

[0239] Second, see Figure 2 As shown, an embodiment of the present application provides a bridge safety monitoring system, the system comprising:

[0240] A plurality of first vibration monitoring devices arranged on the bridge deck structure of the target bridge, which are used to control the first vibration monitoring devices to monitor the bridge deck structure based on a first vibration monitoring frequency within a preset bridge monitoring period to obtain a plurality of bridge deck vibration information;

[0241] A plurality of second vibration monitoring devices arranged on the pier structure of the target bridge, which are used to monitor the pier structure based on a second vibration monitoring frequency within a preset bridge monitoring period to obtain a plurality of pier vibration information;

[0242] A bridge deck vibration information integration module, which is used to obtain bridge deck vibration impact information based on each of the bridge deck vibration information and preset bridge deck vibration standard information within a preset bridge monitoring period;

[0243] A pier vibration information integration module, which is used to obtain pier vibration impact information based on the pier vibration information and preset pier vibration standard information within a preset bridge monitoring period;

[0244] A bridge vibration assessment module, which is used to calculate and obtain a bridge vibration assessment value within a preset bridge monitoring period based on the bridge deck vibration impact information and the bridge pier vibration impact information, combined with corresponding bridge deck vibration impact weights and bridge pier vibration impact weights;

[0245] The bridge safety warning module is used to compare the bridge vibration assessment value with the preset bridge vibration assessment standard value within a preset bridge monitoring period, and to issue a bridge safety warning based on the comparison result.

[0246] In the embodiment of the present application, the bridge deck and the bridge piers are monitored, and a comprehensive consideration is made based on the vibration conditions to perform a rational assessment of the bridge safety so that early warnings can be used to remind bridge maintenance, thereby ensuring the safety of the bridge.

[0247] Furthermore, the bridge deck vibration information integration module is also used to calculate and obtain a bridge deck vibration relative parameter corresponding to each bridge deck vibration information based on each bridge deck vibration information and the bridge deck vibration standard information;

[0248] The bridge deck vibration information integration module is also used to sum the relative parameters of the bridge deck vibration to obtain the bridge deck vibration impact information.

[0249] Furthermore, the bridge deck vibration information integration module is further used to identify the bridge deck vibration information of other first vibration monitoring devices whose relative distances to the first vibration monitoring device are not greater than the first vibration influence distance, and to count the number of the first vibration monitoring devices whose values ​​of the bridge deck vibration information are greater than a preset value of the bridge deck vibration information that mutually influences the bridge deck vibration information, and record it as the corresponding bridge deck vibration information influence factor;

[0250] The bridge deck vibration information integration module is also used to calculate and obtain a bridge deck vibration relative parameter corresponding to the bridge deck vibration information based on the bridge deck vibration information, the bridge deck vibration standard information and the corresponding bridge deck vibration information influencing factor.

[0251] Furthermore, the system also includes a bridge deck monitoring frequency adjustment module, which is used to record the time period traffic flow of the target bridge in each time period within the statistical period, taking one week as a statistical period and every 6 hours as a time period;

[0252] The bridge deck monitoring frequency adjustment module is also used to record the traffic congestion duration of each time period of the target bridge within the statistical period, taking one week as a statistical period and every 6 hours as a time period;

[0253] The bridge deck monitoring frequency adjustment module is further used to obtain a corresponding first time period monitoring frequency adjustment coefficient based on the traffic volume in the time period and the traffic jam duration in the time period, combined with a corresponding time period traffic volume threshold and a time period traffic jam duration threshold;

[0254] The bridge deck monitoring frequency adjustment module is further used to calculate and obtain the first vibration monitoring frequency corresponding to the time period based on a preset standard vibration monitoring frequency and the first time period monitoring frequency adjustment coefficient;

[0255] The first vibration monitoring device is also used to monitor the bridge deck structure based on the first vibration monitoring frequency of each corresponding time period within a preset bridge monitoring period;

[0256] Each of the first vibration monitoring devices is further used to integrate and obtain the bridge deck vibration information corresponding to each of the first vibration monitoring devices based on multiple bridge deck vibration monitoring information obtained through respective monitoring.

[0257] Furthermore, the first vibration monitoring device is also used to monitor and obtain the bridge deck vibration amplitude or bridge deck vibration frequency;

[0258] If the first vibration monitoring device is used to simultaneously monitor and obtain the bridge deck vibration amplitude and the bridge deck vibration frequency, the first vibration monitoring device is also used to perform numerical standardization on the bridge deck vibration amplitude and the bridge deck vibration frequency to obtain a bridge deck vibration amplitude parameter and a bridge deck vibration frequency parameter;

[0259] The first vibration monitoring device is further used to obtain the bridge deck vibration information based on the bridge deck vibration amplitude parameter and the bridge deck vibration frequency parameter in combination with the corresponding bridge deck vibration amplitude influence weight and bridge deck vibration frequency influence weight;

[0260] If the first vibration monitoring device is used to monitor and obtain the bridge deck vibration amplitude, the first vibration monitoring device is also used to perform numerical standardization on the bridge deck vibration amplitude to obtain a bridge deck vibration amplitude parameter;

[0261] The first vibration monitoring device is further used to obtain the bridge deck vibration information based on the bridge deck vibration amplitude parameter;

[0262] If the first vibration monitoring device is used to monitor and obtain the bridge deck vibration frequency, the first vibration monitoring device is also used to perform numerical standardization on the bridge deck vibration frequency to obtain a bridge deck vibration frequency parameter;

[0263] The first vibration monitoring device is also used to obtain the bridge deck vibration information based on the bridge deck vibration frequency parameter.

[0264] Furthermore, the pier vibration information integration module is further used to calculate and obtain the pier vibration relative parameters corresponding to each pier vibration information based on each pier vibration information and the pier vibration standard information;

[0265] The pier vibration information integration module is also used to sum the relative vibration parameters of each pier to obtain the pier vibration influence information.

[0266] Furthermore, the pier vibration information integration module is also used to identify the pier vibration information of other second vibration monitoring devices whose relative distance to the second vibration monitoring device is not greater than the second vibration influence distance, and count the number of the second vibration monitoring devices whose values ​​of the pier vibration information are greater than the preset values ​​of the mutually influencing pier vibration information, and record them as the corresponding pier vibration information influence factors;

[0267] The pier vibration information integration module is also used to calculate and obtain the pier vibration relative parameters corresponding to the pier vibration information based on the pier vibration information, the pier vibration standard information and the corresponding pier vibration information influencing factors.

[0268] Furthermore, the system also includes a pier monitoring frequency adjustment module, which is used to record the time value of the pier water flow impact pressure value greater than the water flow impact pressure threshold value in each time period within the statistical period of the target bridge, with one week as the statistical period and every 6 hours as a time period, and record it as the impact pressure effective time value;

[0269] The pier monitoring frequency adjustment module is also used to obtain a corresponding second time period monitoring frequency adjustment coefficient based on the impact pressure effective time value and the corresponding impact pressure effective time value threshold;

[0270] The pier monitoring frequency adjustment module is also used to calculate and obtain the second vibration monitoring frequency corresponding to the time period based on a preset standard vibration monitoring frequency and the second time period monitoring frequency adjustment coefficient;

[0271] The second vibration monitoring device is also used to monitor the bridge pier structure based on the second vibration monitoring frequency of each corresponding time period within a preset bridge monitoring period;

[0272] Each of the second vibration monitoring devices is also used to integrate the bridge pier vibration information corresponding to each of the second vibration monitoring devices based on the multiple bridge pier vibration monitoring information obtained by each monitoring.

[0273] Furthermore, the second vibration monitoring device is used to monitor and obtain the vibration amplitude or vibration frequency of the bridge pier;

[0274] If the second vibration monitoring device is used to simultaneously monitor and obtain the vibration amplitude of the bridge pier and the vibration frequency of the bridge pier, the second vibration monitoring device is also used to perform numerical standardization on the vibration amplitude of the bridge pier and the vibration frequency of the bridge pier to obtain a vibration amplitude parameter of the bridge pier and a vibration frequency parameter of the bridge pier;

[0275] The second vibration monitoring device is further used to obtain the pier vibration information based on the pier vibration amplitude parameter and the pier vibration frequency parameter in combination with the corresponding pier vibration amplitude influence weight and pier vibration frequency influence weight;

[0276] If the second vibration monitoring device is used to monitor and obtain the vibration amplitude of the bridge pier, the second vibration monitoring device is also used to perform numerical standardization on the vibration amplitude of the bridge pier to obtain a vibration amplitude parameter of the bridge pier;

[0277] The second vibration monitoring device is also used to obtain the vibration information of the pier based on the vibration amplitude parameter of the pier;

[0278] If the second vibration monitoring device is used to monitor and obtain the vibration frequency of the bridge pier, the second vibration monitoring device is also used to perform numerical standardization on the vibration frequency of the bridge pier to obtain a vibration frequency parameter of the bridge pier;

[0279] The second vibration monitoring device is further used to obtain the vibration information of the pier based on the vibration frequency parameter of the pier.

[0280] Furthermore, if the target bridge is a cable-stayed bridge structure, the system further includes:

[0281] a plurality of third vibration monitoring devices arranged on each of the cable-stayed structures of the target bridge;

[0282] The third vibration monitoring device is used to monitor the cable-stayed structure within a preset bridge monitoring period based on a third vibration monitoring frequency to obtain vibration information of multiple cables;

[0283] A cable-stayed cable vibration information integration module, which is used to obtain the cable-stayed cable vibration influence information based on the cable-stayed cable vibration information and the preset cable-stayed cable vibration standard information within a preset bridge monitoring period;

[0284] The bridge vibration assessment module is also used to calculate the bridge vibration assessment value within a preset bridge monitoring period based on the bridge deck vibration impact information, the pier vibration impact information and the cable vibration impact information, combined with the corresponding bridge deck vibration impact weights, pier vibration impact weights and cable vibration impact information.

[0285] In the embodiment of the present application, the bridge deck, bridge piers and cable-stayed cables are monitored and comprehensively considered based on the vibration conditions, thereby making a rational assessment of the safety of the bridge so that early warnings can be used to remind bridge maintenance, thereby ensuring the safety of the bridge.

[0286] Furthermore, the cable vibration information integration module is further used to calculate and obtain the cable vibration relative parameter corresponding to each cable vibration information based on each cable vibration information and the cable vibration standard information;

[0287] The cable-stayed cable vibration information integration module is further used to sum the relative vibration parameters of each of the cable-stayed cables to obtain the cable-stayed cable vibration influence information.

[0288] Furthermore, the cable vibration information integration module is also used to identify the cable vibration information of other third vibration monitoring devices whose relative distance to the third vibration monitoring device is not greater than the third vibration influence distance, and count the number of the third vibration monitoring devices whose values ​​of the cable vibration information are greater than the preset values ​​of the mutually influencing cable vibration information, which is recorded as the corresponding cable vibration information influence factor;

[0289] The cable vibration information integration module is further used to calculate and obtain the cable vibration relative parameter corresponding to the cable vibration information based on the cable vibration information, the cable vibration standard information and the corresponding cable vibration information influencing factor.

[0290] Furthermore, the system also includes a cable-stayed cable monitoring frequency adjustment module, which is used to record the real-time wind speed at the height of the cable-stayed cable structure of the target bridge;

[0291] The cable monitoring frequency adjustment module is further used to obtain a monitoring frequency adjustment coefficient for a third time period based on the real-time wind speed and a preset wind speed standard value;

[0292] The cable monitoring frequency adjustment module is further used to calculate and obtain the corresponding third vibration monitoring frequency based on the preset standard vibration monitoring frequency and the first time period monitoring frequency adjustment coefficient;

[0293] The third vibration monitoring device is further used to monitor the cable-stayed structure based on the corresponding third vibration monitoring frequency within a preset bridge monitoring period;

[0294] Each of the third vibration monitoring devices is further used to integrate the vibration information of the inclined cables corresponding to each of the third vibration monitoring devices based on the vibration monitoring information of the plurality of inclined cables obtained through the respective monitoring.

[0295] Furthermore, the third vibration monitoring device is used to monitor and obtain the vibration amplitude or vibration frequency of the inclined cable;

[0296] If the third vibration monitoring device is used to simultaneously monitor and obtain the vibration amplitude of the inclined cable and the vibration frequency of the inclined cable, the third vibration monitoring device is also used to perform numerical standardization on the vibration amplitude of the inclined cable and the vibration frequency of the inclined cable to obtain the vibration amplitude parameter of the inclined cable and the vibration frequency parameter of the inclined cable;

[0297] The third vibration monitoring device is further used to obtain the vibration information of the inclined cable based on the vibration amplitude parameter of the inclined cable and the vibration frequency parameter of the inclined cable in combination with the corresponding influence weight of the vibration amplitude of the inclined cable and the influence weight of the vibration frequency of the inclined cable;

[0298] If the third vibration monitoring device is used to monitor and obtain the vibration amplitude of the inclined cable, the third vibration monitoring device is also used to perform numerical standardization on the vibration amplitude of the inclined cable to obtain the vibration amplitude parameter of the inclined cable;

[0299] The third vibration monitoring device is further used to obtain the vibration information of the inclined cable based on the vibration amplitude parameter of the inclined cable;

[0300] If the third vibration monitoring device is used to monitor and obtain the vibration frequency of the inclined cable, the third vibration monitoring device is also used to perform numerical standardization on the vibration frequency of the inclined cable to obtain the vibration frequency parameter of the inclined cable;

[0301] The third vibration monitoring device is further used to obtain the vibration information of the inclined cable based on the vibration frequency parameter of the inclined cable.

[0302] It should be noted that the technical problems, technical fields, technical solutions and technical effects of the bridge safety monitoring system in the embodiment of the present application are similar to those of the bridge safety monitoring method mentioned in the first aspect at the technical principle level, and will not be elaborated here.

[0303] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0304] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A bridge safety monitoring method, characterized in that: The method comprises the following steps: Arrange a plurality of first vibration monitoring devices on the bridge deck structure of the target bridge, and arrange second vibration monitoring devices correspondingly on the plurality of pier structures of the target bridge; In a preset bridge monitoring cycle, based on a first vibration monitoring frequency, controlling the first vibration monitoring device to monitor the bridge deck structure to obtain a plurality of bridge deck vibration information; In a preset bridge monitoring cycle, based on a second vibration monitoring frequency, controlling the second vibration monitoring device to monitor the bridge pier structure to obtain vibration information of multiple bridge piers; In a preset bridge monitoring period, based on each of the bridge deck vibration information and preset bridge deck vibration standard information, bridge deck vibration impact information is obtained; Within a preset bridge monitoring period, based on the vibration information of each pier and preset pier vibration standard information, pier vibration impact information is obtained; In a preset bridge monitoring period, based on the bridge deck vibration impact information and the bridge pier vibration impact information, combined with the corresponding bridge deck vibration impact weight and bridge pier vibration impact weight, a bridge vibration assessment value is calculated; During the preset bridge monitoring period, the bridge vibration assessment value is compared with the preset bridge vibration assessment standard value, and a bridge safety warning is issued based on the comparison result.

2. The bridge safety monitoring method according to claim 1, characterized in that: In a preset bridge monitoring period, based on each of the bridge deck vibration information and preset bridge deck vibration standard information, bridge deck vibration impact information is obtained, including the following steps: Based on each of the bridge deck vibration information and the bridge deck vibration standard information, calculate and obtain a bridge deck vibration relative parameter corresponding to each of the bridge deck vibration information; The bridge deck vibration relative parameters are summed to obtain the bridge deck vibration influence information.

3. The bridge safety monitoring method according to claim 2, characterized in that: The method further comprises the following steps: Identify the bridge deck vibration information of other first vibration monitoring devices whose relative distances to the first vibration monitoring device are not greater than the first vibration influence distance, and count the number of the first vibration monitoring devices whose values ​​of the bridge deck vibration information are greater than a preset value of the mutually influencing bridge deck vibration information, and record it as the corresponding bridge deck vibration information influence factor; Based on the bridge deck vibration information, the bridge deck vibration standard information and the corresponding bridge deck vibration information influencing factor, a bridge deck vibration relative parameter corresponding to the bridge deck vibration information is calculated and obtained.

4. The bridge safety monitoring method according to claim 1, characterized in that: The method further includes a bridge deck monitoring frequency adjustment process, and the bridge deck monitoring frequency adjustment process includes the following steps: Taking one week as a statistical period and every 6 hours as a time period, the time period traffic flow of the target bridge in each time period within the statistical period is recorded; Taking one week as a statistical period and every 6 hours as a time period, the traffic congestion duration of each time period of the target bridge within the statistical period is recorded; Based on the traffic volume in the time period and the traffic jam duration in the time period, combined with the corresponding traffic volume threshold in the time period and the traffic jam duration threshold in the time period, a corresponding first time period monitoring frequency adjustment coefficient is obtained; Based on a preset standard vibration monitoring frequency and the first time period monitoring frequency adjustment coefficient, calculate and obtain the first vibration monitoring frequency corresponding to the time period; The method further comprises the following steps: In a preset bridge monitoring cycle, based on the first vibration monitoring frequency of each corresponding time period, controlling the first vibration monitoring device to monitor the bridge deck structure; Each of the first vibration monitoring devices integrates the bridge deck vibration information corresponding to each of the first vibration monitoring devices based on the multiple bridge deck vibration monitoring information obtained through monitoring by each of the first vibration monitoring devices.

5. The bridge safety monitoring method according to claim 1, characterized in that: The first vibration monitoring device is used to monitor and obtain the bridge deck vibration amplitude or bridge deck vibration frequency; If the first vibration monitoring device is used to simultaneously monitor and obtain the bridge deck vibration amplitude and the bridge deck vibration frequency, the method includes the following steps: Numerically normalizing the bridge deck vibration amplitude and the bridge deck vibration frequency to obtain a bridge deck vibration amplitude parameter and a bridge deck vibration frequency parameter; Based on the bridge deck vibration amplitude parameter and the bridge deck vibration frequency parameter, combined with the corresponding bridge deck vibration amplitude influence weight and bridge deck vibration frequency influence weight, the bridge deck vibration information is obtained; If the first vibration monitoring device is used to monitor and obtain the vibration amplitude of the bridge deck, the method comprises the following steps: Numerically normalizing the bridge deck vibration amplitude to obtain a bridge deck vibration amplitude parameter; Based on the bridge deck vibration amplitude parameter, obtaining the bridge deck vibration information; If the first vibration monitoring device is used to monitor and obtain the vibration frequency of the bridge deck, the method includes the following steps: Numerical standardization is performed on the bridge deck vibration frequency to obtain a bridge deck vibration frequency parameter; Based on the bridge deck vibration frequency parameter, the bridge deck vibration information is obtained.

6. The bridge safety monitoring method according to claim 1, characterized in that: In a preset bridge monitoring period, based on the vibration information of each pier and preset pier vibration standard information, the pier vibration influence information is obtained, including the following steps: Based on the vibration information of each pier and the standard information of the pier vibration, a relative pier vibration parameter corresponding to the vibration information of each pier is calculated; The relative vibration parameters of each bridge pier are summed to obtain the vibration influence information of the bridge pier.

7. The bridge safety monitoring method according to claim 6, characterized in that: The method further comprises the following steps: Identify the pier vibration information of other second vibration monitoring devices whose relative distances to the second vibration monitoring device are not greater than the second vibration influence distance, count the number of the second vibration monitoring devices whose values ​​of the pier vibration information are greater than a preset value of the mutually influencing pier vibration information, and record it as the corresponding pier vibration information influence factor; Based on the bridge pier vibration information, the bridge pier vibration standard information and the corresponding bridge pier vibration information influencing factor, a bridge pier vibration relative parameter corresponding to the bridge pier vibration information is calculated and obtained.

8. The bridge safety monitoring method according to claim 6, characterized in that: The method further includes a bridge pier monitoring frequency adjustment process, and the bridge pier monitoring frequency adjustment process includes the following steps: Taking one week as a statistical cycle and every 6 hours as a time period, record the time value of the bridge pier water flow impact pressure value greater than the water flow impact pressure threshold value in each time period within the statistical cycle of the target bridge, and record it as the impact pressure effective time value; Based on the impact pressure effective time value and the corresponding impact pressure effective time value threshold, a corresponding second time period monitoring frequency adjustment coefficient is obtained; Based on a preset standard vibration monitoring frequency and a monitoring frequency adjustment coefficient for the second time period, calculating and obtaining the second vibration monitoring frequency corresponding to the time period; The method further comprises the following steps: In a preset bridge monitoring cycle, based on the second vibration monitoring frequency of each corresponding time period, controlling the second vibration monitoring device to monitor the bridge pier structure; Each of the second vibration monitoring devices integrates the bridge pier vibration information corresponding to each of the second vibration monitoring devices based on the multiple bridge pier vibration monitoring information obtained through monitoring by each of the second vibration monitoring devices.

9. The bridge safety monitoring method according to claim 1, characterized in that: If the target bridge is a cable-stayed bridge structure, the method further comprises the following steps: Arrange a plurality of third vibration monitoring devices on each of the cable-stayed structures of the target bridge; In a preset bridge monitoring cycle, based on a third vibration monitoring frequency, controlling the third vibration monitoring device to monitor the cable-stayed structure to obtain vibration information of a plurality of cables; In a preset bridge monitoring period, based on the vibration information of each of the stay cables and preset standard information of the stay cable vibration, the stay cable vibration influence information is obtained; During a preset bridge monitoring period, based on the bridge deck vibration impact information, the bridge pier vibration impact information and the cable-stayed cable vibration impact information, combined with corresponding bridge deck vibration impact weights, bridge pier vibration impact weights and cable-stayed cable vibration impact information, a bridge vibration assessment value is calculated.

10. A bridge safety monitoring system, characterized in that: The system comprises: A plurality of first vibration monitoring devices arranged on the bridge deck structure of the target bridge, which are used to control the first vibration monitoring devices to monitor the bridge deck structure based on a first vibration monitoring frequency within a preset bridge monitoring period to obtain a plurality of bridge deck vibration information; A plurality of second vibration monitoring devices arranged on the pier structure of the target bridge, which are used to monitor the pier structure based on a second vibration monitoring frequency within a preset bridge monitoring period to obtain a plurality of pier vibration information; A bridge deck vibration information integration module, which is used to obtain bridge deck vibration impact information based on each of the bridge deck vibration information and preset bridge deck vibration standard information within a preset bridge monitoring period; A pier vibration information integration module, which is used to obtain pier vibration impact information based on the pier vibration information and preset pier vibration standard information within a preset bridge monitoring period; A bridge vibration assessment module, which is used to calculate and obtain a bridge vibration assessment value within a preset bridge monitoring period based on the bridge deck vibration impact information and the bridge pier vibration impact information, combined with corresponding bridge deck vibration impact weights and bridge pier vibration impact weights; The bridge safety warning module is used to compare the bridge vibration assessment value with the preset bridge vibration assessment standard value within a preset bridge monitoring period, and to issue a bridge safety warning based on the comparison result.

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